Cultivator tool



March 5, 1946. L. R. SHAFFEIR CULTIIVATOR TOOL Filed Oct. 8, 1942 4 Sheets-Sheet March 5, 1946. I RV. SHAFFER 2,396,132

, CULTIVATOR TOOL Filed 0ct.-8,' 1942'- 4 Sheets-Sheet 2 Inventor March 5, 1946. I 'L. R. SHAFFER 2,396,132

' CULTIvATOR TOQL Filed 001;. s, 1942- 4 Sheets-Sheet 5 Inventor March 5, 1946. R. SHAFFER v 2,396,132

' CULTIVATOR moon Filed Oct. 8, 1942 '4 Sheets-sheaf,

\ liarkz'ra ENS/ 1w e? Inventor 44 I Mfie s Patented Mar. 5, 1946 I UNITED sTA s PATENT OFFICE 3; a I 2,396,132 i con'ilva'roa TQOL Larkin Shaffer, Garland, Utah Application October 8, 1942, SerialNo. 451,299

8 Claims. (01.

The present invention relates to new and useful improvements in tools for row crop cultivators, and has for its primary object to provide, in a manner as hereinafter set forth, a novelconstruction, combination and arrangement of earth working elements, whereby various cultivating operations may be expeditiously performed. 7 Another very important object of the invention is to provide a set of cultivator tools of the aforementioned character which are adapted torbe A conveniently adjusted as desired to meet diiferent conditions.

Other objects of the invention are to provide a set of cultivator tools of the character described which will be comparatively simple in construction, strong, -durable, highly efiicient and reliable in use, compact, light in weight, and which may be manufactured at low cost.

All of the foregoing and still further objects and advantages of the invention will become ap- 97-205) I h A V I ingadjustment in a vertical plane on the shank 2. Toward thisend, the plate-l has formed therein a vertical lower slot 3 and'a substantially horl zontalupper slot 4, said slots accommodating/securing bolts 5, The plate I further includes a rearwardly inclined, tapered forward edge'or marginal portion 61 The inclined forward marginal portion'fi of the plate Ihas formed therein a seriesof openings 1; V r i 1 'Removably and adjustably mounted on the front portion of the plate I is a metallic; digger 8. As illustrated to advantage in Figure.3 of the drawings, the digger 8 is substantially V-shaped in cross-section to accommodate the portion 6 of the plate I. A bolt 9 secures the digger 8 on the plate l, said bolt being insertible selectively 'in the openings 1. The digger 8 terminates, at its lower end, in a forwardly protruding apertured fo'ottlt from the rear portion of whicha lug ll depends.

parent from a study of the following specification;

taken in connection with the accompanying drawings wherein like characters of reference designate corresponding parts throughout the several views, and wherein: Figure 1 is a View in side elevation, showing the device ready for operation as a duck with a digger on the front thereof.

Figure 2 is a bottom plan view.

Figure 3 is a detail view in section,-taken substantially on the line 3-3 of Figure 1.

foot

' Figure 4 is a view in vertical section through the lower portion of the digger. H

Figure 5 is a perspective view of one of the sweep brackets.

Figure -6 is a perspective view of one-of the sweeps; I V

, Figure 7 is a view in side elevation, showing an arrangement which is particularly adapted for cutting weeds up close to the plants;

Figure 8 is an elevationalview, looking at the opposite side of the embodiment shown-in Figure '7. v 7

Figure 9 is a bottom plan view of the emb'0di ment of'Figures 7 and 8.

Figure 10 is a detail view in vertical section, taken substantially on the line I 6-l t of Figure 7.

Figure 11 is a view in side elevation of anarrangement which is particularly adapted for cutting hard earth crust and grass up close to the row.

Figure 12 is a top plan view of the arrangement shown in Figure 11. I

crust cutting implement, g

Referring to the drawings in detail, it will be I seen that reference numeral l designates a plate of suitable metal which is mounted vertically on the lower end portion of a conventional culti-c vator shank 2. The plate I is capable of swing- A bolt I2 removably secures a substantially diamond-shaped, reversible self-sharpening blade [3 beneath the foot Ill. The blade I3 has formed therein a longitudinal seriesof'three openings 14. The intermediate opening [4 accommodates the lug ll while the bolt [2 is engageable in either of the end openings. r

Mounted on the lower at an intermediate point, is a pair: of angular metallic brackets I5. Bolts IBand I'I secure the brackets IS on the plate I- for swinging *adjustment in'a vertical plane; An arcuate slot l8 in the'plate l accommodating the bolt II, the brackets l5 pivoting on the bolt [6. Asbest seen in Figure 5 of the drawings, the brackets l5'include horizontally projecting flanges l9 havingarcuate slots 20 in their'rear portions. 'Forwardly-of the flanges l9, the brackets l5"furth'er 'include ears 2|. The ears 2| are located above the horizontal'plane of the flangesl 9'anfd depending from said ears are pins or the like'22. 5 t

' Self-sharpening sweeps- 23 are mounted for swinging adjustment on the-bracketsjlt. The

'sweeps 23 include beveled forward end portions 24 having eyes 25. thereon for receiving the pins 22 beneath the ears 2i, said sweepsresting ongthe flanges l9. Openings 26areprovided inthe forward portions'of the sweeps 23 for the reception ofjbolts '21 for securing said sweeps in adjusted position, said bolts passing through the slots 20;

In Figures 7,8 and 9 of the drawings, reference thecultivator shank. The lower, front "portion of I the plate 28, is formed to provide alaterally pressed apertured'ear Z9. Pivotally mountedfor swinging adjustment in a vertical planeon the ear zaadjacent one side of the plate 28 is a bracket 38. It will be noted that'thebracketl 30 is operable on one side of therplate 28.; The bracket 39 includes an apertured' ear 3lwhich extends adjacent the opposite side of the ear 29.

portion of the plate I,

In other respects, the members 28 and 30 are substantially similar in construction and operation to the members I and IS. A single sweep 32 is used in this embodiment of theinvention, said sweep being mounted on the bracket 30.

Adjustably mounted on the front portion of the plate 28 is a cutter 33. Bolt 34 secure the cutter 33 in adjusted position on the plate 28. An arcuate slot 35 is provided in the upper portion of the cutter 33 for the reception of one of the bolts 34 for permitting pivotal adjustment of said cutter. A foot 36 projects laterally from the lower end of the cutter 33. Removably mounted beneath the foot 36 is a reversible, self-sharpening knife 31. The. knife 3'! is secured in psition in a manner substantially similar to the knife '13. The front marginal portion of the knife 33, which terminates in the cutting edge is curved slightly toward the plants, as at 33.

In the embodiment shown in Figures 11, 12 and 13, ofthe drawings, reference numeral 3% designates a crustcuttingknife which is adjustably mounted on th front portion of the plate ,I and which projects forwardly therefrom. The cutter 39 includes a rearwardly extending, attaching armAU whichis adjustably secured by bolts 4! to the plate ll. An arcuate slot 32 in the arm 40 accommodates one of the bolts it fo per mitting swinging adjustment of the cutter 3?). A foot 43 projects laterally from the lower end of the cutter 39. Removably and adjustably secured beneath the foot 43 and projecting laterally therefrom is a reversible self-sharpening knife 44. The knife 44 is also secured in position in a manner substantially similar to the knife l3. In this embodiment, a single sweep is used. It will be noted that thisslngle sweep and the knife 44 are located on the same side of the plate I. The knife M is substantially diamend-shaped, but the outer edges only thereof are sharpened.

An important time, labor and material saving feature in these tools is made possible by means of inverting the detachable cutting blades and digger points, making them self-sharpening. If worn out, new blades and points can be purchased and replaced as shown without purchasing the complete tool.

It is believed that the many advantages of a cultivator embodying the presentinvention will be readily understood, and although preferred embodiments are as illustrated and described, it is to b understood that further modifications and changes in the details of construction and in the combination and arrangement of parts may be resorted to which will fall within the scope of the invention as claimed.

What is claimed is:

1. An agricultural tool of the character described comprising a plate for vertical mounting on a cultivator shank, a pivoted bracket mounted longitudinally on the plate for swinging adjustment in a vertical plane, said bracket including a laterally projecting flange on its lower portion, a pin depending from the bracket in front of said flange, a sweep journaled at its forward end on the pin and extending rearwardly from the latter across and resting on the flange, and means for securing the sweep in adjusted position on said flange.

2. An agricultural tool of the character described comprising a plate for vertical mounting on a cultivator shank, a bracket pivotally mounted for swinging adjustment in a vertical plane on said plate, said bracket including a laterally projecting flange on its lower portion and further including a laterally projecting ear forwardly of and above the horizontal plane of said flange, a pin depending from the ear, a sweep journaled on the pin and resting on the flange, and a bolt securing the sweep in adjusted position on the flange, said flange having a slot therein accommodating the bolt.

3. A cultivator tool comprising a vertical plate for mounting on a shank, said plate having a laterally pressed ear formed integrally therewith, a bracket mounted for swinging adjustment on one side of the plate, said bracket including an ear pivotally connected to thefirst-named car on the opposite side thereof, said bracket'further including a horizontallyprojecting flang on its lower portion, and still further including a horlzontally projecting ear above the horizontal plane of said flange, a pin depending from the secondnamed ear, asweep'journaled for swinging movement on the pin, and means for securing said sweep in adjusted position on the flange.

4. A cultivator tool comprising a plate for mounting on a shank, said plate including an inclined, tapered forward edge, a digger of substantially V-shaped cross-section mounted on the forward portion ofthe plate, a horizontal apertured foot on the lower end of said digger, and a reversible knife removably mounted beneath said foot.

5. A cultivator tool comprising a plate for mounting vertically on a cultivator shank, said plate including a substantially tapered, rearwardly inclined forward end portion, a digger of substantially V-shaped cross-section removably mounted on said forward end portion of the plate, said digger made adjustable for deep or shallow digging by means of holes in the front edge of said plate, an apertured foot projecting forwardly from the lower end of the digger, a lug depending from said foot, and a reversible knife removably mounted beneath the foot, said knifethaving a series of openings therein, one of the openings for the reception of the lug, the other openings for receiving a securing element which is selectively insertible therein.

6. A cultivator tool comprising avertical plate for mounting on a cultivator shank, a knife mounted at an inclination on the forward por tion of the plate, said knife including a laterally curved cutting edge portion, a horizontal apertured laterally projecting foot on the lower end of the knife, and a reversible cutter removably mounted beneath said foot.

7. A cultivator tool of the character described comprising a vertical plate for mounting ona cul tivator shank, a cutter mounted vert-i-cally on the front portion of the plate, said cutter including a rearwardly extending arm secured to the plate, a horizontal apertured laterally projecting foot on the lower end of the cutter, and a reversible knife removably secured beneath said foot.

8. A cultivator tool comprising -a plate for mounting on a shank, said plate including an in-- clined tapered forward edge, a digger of substantially V-shaped cross section mounted onthe forward portion of the plate, a horizontal apertured foot on the lower end of said digger, and a knife removably mounted beneath said foot.

, LARKIN R. SHAFFER. 

